ABSTRACT
In this chapter, we would like to deepen the concept of the running coupling constant and discuss how this has led to the first ideas for a complete unification of the gauge forces, excluding gravity, or what is known as grand unification.
In this chapter, we would like to deepen the concept of the running coupling constant and discuss how this has led to the first ideas for a complete unification of the gauge forces, excluding gravity, or what is known as grand unification.